Serial connection structure of direct-drive motor

Abstract

A serial connection structure of a direct-drive motor, including a central shaft, a housing, at least two rotors and stators of the same number as the rotors. The central shaft has a predetermined length. The housing has an internal space and is coaxially fitted around the central shaft. The rotors are received in the housing and coaxially rotatably fitted on the central shaft at predetermined intervals. The stators are received in the housing and coaxially fitted around the central shaft corresponding to the rotors respectively. The stators are spaced from the rotors by a predetermined distance. The serial connection structure is applicable to a generator or a wind power generator system without extra connecting with any transmission gear system. Therefore, the number of components is decreased, the maintenance cost is lowered and the service is simplified.

Description

BACKGROUND OF THE INVENTION[0001]The present invention relates generally to motor technique, and more particularly to a serial connection structure of a direct-drive motor, which is applicable to, but not limited to, a generator or a wind power generator system.[0002]Following the rapid increase of the world's population, there is a crisis of energy. Also, global warming has become more and more serious. It is a worldwide trend to emphasize the concept of environmental protection and make effort in developing renewable energy sources as alternative energy sources. For example, hydraulic power generation systems, thermal power generation systems and wind power generation systems have been widely developed to minimize pollution to the environment. In these power generation systems, hydraulic power generation systems require plentiful amount of water and thermal power generation systems still tend to cause pollution, while only wind power generation systems rely on inexhaustible natura...

AI Technical Summary

Benefits of technology

[0008]It is therefore a primary object of the present invention to provide a serial connection structure of a direct-drive motor, which is applicable to a generator or a wind power generator system without extra connecting with any transmission gear system. Therefore, the number of components is decreased, the maintenance cost is lowered and the service is simplified.

[0009]It is a further object of the present invention to provide the above serial connection structure of the direct-drive motor. A user can directly adjust one of the rotors or one of the stators and change relative position between the rotors or stators so as to overcome the problem of cogging in operation.

[0010]It is still a further object of the present invention to provide the above serial connection structure of the direct-drive motor. The number of the serially connected motors can be increased as necessary.

Problems solved by technology

Following the rapid increase of the world's population, there is a crisis of energy.

Also, global warming has become more and more serious.

In these power generation systems, hydraulic power generation systems require plentiful amount of water and thermal power generation systems still tend to cause pollution, while only wind power generation systems rely on inexhaustible natural energy resource and are free from the problem of fuel.

However, the conventional wind power generation system still has some shortcomings as follows:1. The gear system adapted to the motor has complicated structure so that the manufacturing cost is relatively high.2. During operation, the shaft of the gear system is apt to wear and damage.

This will lead to increment of cost for later maintenance.3. The gear system has the problem of energy loss during operation.

As a result, power generation efficiency will be decreased.

Images